A Comparative Study to Evaluate the Effect of Thermal Cycling on the Flexural Strength of Bis-Acryl Composite Resin, Light Cure Resin and Cad/Cam Resin for Provisional Restorations-An In Vitro Study

doi:10.5281/zenodo.8178950

International Journal of Medical and Pharmaceutical Research

2023, Volume-4, Issue-4 doi: 10.5281/zenodo.8178950

Original Article

A Comparative Study to Evaluate the Effect of Thermal Cycling on the Flexural Strength of Bis-Acryl Composite Resin, Light Cure Resin and Cad/Cam Resin for Provisional Restorations-An In Vitro Study

Thungbeni P Ngullie, MDS

Dr. Sounder Raj K, MDS

Dr. Vishwanath S K, MDS

DOI : 10.5281/zenodo.8178950

Published

July 24, 2023

Abstract

Aim: To compare the effect of thermal cycling on the flexural strength of Bis -acryl composite resin, light cure UDMA resin and CAD/CAM PMMA resin for provisional restorations.

Materials And Methods: This study included 60 specimens. Twenty bar-shaped specimens were fabricated for each group Bis-Acryl composite resin, Light cure UDMA Resin and CAD/CAM Resin with the use of a split acrylic mold. These specimens were stored in artificial saliva for 10 days. The specimens were then subjected to thermal cycling. Flexural strength was calculated using three point bending test under universal testing machine. Data were analyzed using student-ttest (α=0.05) @ 90% power.

Results: The highest mean and standard deviation before thermal cycling was seen in CAD/CAM Resin (106.74 ± 3.61 ) and the lowest in Bis-Acryl composite Resin (92.57± 1.36). The highest mean and standard deviation after thermal cycling was seen in CAD/CAM(94.83± 2.56) and the lowest in Bis-Acryl Composite Resin (81.34 ± 1.64).

Conclusion: Within the limitations of this study by analyzing the results, it was concluded that the Thermal cycling had shown significant impact on the flexural strength of all the materials. Group A Specimens (CAD/CAM PMMA Resin) exhibited highest flexural strength before and after thermal cycling followed by Group C Specimens (Bis- Acryl Composite Resin ) and Group B (UDMA Resin group ).

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